Answer:
(intransitive) To be enough or sufficient; to meet the need (of anything); to be equal to the end proposed; to be adequate; to be good enough. (transitive) To satisfy; to content; to be equal to the wants or demands of. To furnish; to supply adequately.
Explanation:
Answer: B
Perspective is seeing things from a specific point. Aka point of veiw.
Thoreau mostly uses imagery to illustrate time in the excerpt. The second sentence is saying that he is in the midst of time/living, and he can "detect how shallow it is," meaning that he is aware that life is short and that the end is inevitable. Thoreau also describes time as being fleeting, but ever-present.
I hope this helps!